constant variance

collocation in English

meanings of constantand variance

These words are often used together. Click on the links below to explore the meanings. Or, see other collocations with variance.
constant
adjective
uk /ˈkɒn.stənt/ us /ˈkɑːn.stənt/
happening a lot or all ...
See more at constant
variance
noun
uk /ˈveə.ri.əns/ us /ˈver.i.əns/
formal
the fact that two or more things are different, or the amount or number by which they ...
See more at variance

Examples of constant variance

These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.
Once a model had been defined, its validity was checked, by examining the residuals for normality and constantvariance.
Note that, in this model, it is assumed that the shocks have constantvariance and only t is uncertain.
The variance was chosen to produce levels of genetic variance comparable to those for the constantvariance situation examined above.
This behavior can be explained by the boundedness of the time series of the price, which leads to constantvariance of returns.
Initially, these were assumed to represent independent random variables each with constantvariance, denoted by s2=s2cf and s2 respectively.
However, numerical simulations (not reported here) also indicate that the results are quite similar to those obtained here with constantvariance.
The first row tests the hypothesis that (logarithmic) returns are normally distributed with a zero mean and constantvariance.
One of these is that the error term has a constantvariance.
From
Wikipedia

This example is from Wikipedia and may be reused under a CC BY-SA license.
Estimations and significance tests of variance components assume constant variances and normality, irrespective of which method of fitting is used.
To allow for this channel to work through second moments in our setup, we would have to relax the assumption of constant variances of the shocks.
These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.
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